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Writing in his report, Dr More said of the larger than average percentage of EU workers at the trust: "I suspect this is not unusual for the large teaching hospitals, especially those like us in 'hot' economic areas.

"CUH is an international family and the care we provide is critically dependant on staff from across the world.

"As is emerging in some other sectors, I am concerned that some of the national 'mood music' is unsettling our EU colleagues, causing some to question whether they are welcome here.

Mike More, pictured left. (Image: Warren Gunn)

"We must counter that."

Theresa May has repeatedly refused to guarantee that the 3 million EU citizens living in the UK will be able to remain in the country after Brexit.

Ministers have insisted they will not make any such guarantees until other European countries promise to secure the residency rights of Britons living elsewhere in the bloc.